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Understanding the 21st Century Projection of the Wet Season over the Southeastern United States

Title: Understanding the 21st Century Projection of the Wet Season over the Southeastern United States.
Name(s): Selman, Christopher Manuel, author
Misra, Vasubandhu, professor directing thesis
Bourassa, Mark, committee member
Stefanova, Lydia, 1972-, committee member
Wu, Zhaohua, committee member
Department of Earth, Ocean and Atmospheric Sciences, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: text
Issuance: monographic
Date Issued: 2012
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
Physical Form: online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: This study analyzes projections of summer precipitation over the Southeastern United States under the A2 climate scenario using the Community Climate System Model Version3 (CCSM3), and the Regional Spectral Model (RSM) forced with CCSM3 output. The CCSM3 projects a dipole in precipitation, while the RSM projects a universal drying of the Southeast. The difference in patterns of projected rainfall is explained through the RSM's depiction of the diurnal variance of precipitation, which according to observations can account for up to 40% of total seasonal variance in precipitation. The CCSM3 pattern is attributed to an exaggeration of the "upped ante" mechanism, whereby the atmospheric boundary layer (ABL) moisture required for convection to occur increases in a warmed environment. Also contributing to the drying of both models is an expansion of the North Atlantic subtropical high (NASH).
Identifier: FSU_migr_etd-5171 (IID)
Submitted Note: A Thesis submitted to the Department of Earth, Ocean, and Atmospheric Science in partial fulfillment of the requirements for the degree of Master of Science.
Degree Awarded: Summer Semester, 2012.
Date of Defense: April 3, 2012.
Bibliography Note: Includes bibliographical references.
Advisory Committee: Vasubandhu Misra, Professor Directing Thesis; Mark Bourassa, Committee Member; Lydia Stefanova, 1972-, Committee Member; Zhaohua Wu, Committee Member.
Subject(s): Earth sciences
Atmospheric sciences
Persistent Link to This Record:
Owner Institution: FSU